Propranolol has been documented to cause weight gain especially around the midsection. I don't think it's a commonly listed or talked about side effect though. I don't know if it does anything either. It didn't seem to do anything for me. That's why im going off it. In a week I'll only be on 3 psych meds. I was on 12 less than a year ago. Feels good. I'm not a zombie anymore.